Did you read my post?And if instead of следующий we have последний do the same prepositions apply? I'm thinking about creating a society "Russian students anonymous"... prepositions, aspect, verbs of motion... I'm going bananas!
"на следующий день" - 145,000,000
"в следующий день" - 64,400,000
It is "или в следующий день" that is not used.
dePrades, that web page we have been using is not so much "rules" as observations. This seems to be a situation where the "rules" don't apply. We'll just have to make a note of it, I think.